2014 newest 4th generation portable grass cutter,automatic lawn mower,garden tractor

Specifications 2014 Newest 4th Generation Robot Lawn Mower With Range Funtion,Auto Recharged,Remote Controller,Waterproof,Subarea setting

             Sample order link: ( Support Credit card payment ) (Please copy the following link and paste it into the browser address bar) http://www.aliexpress.com/store/product/2014-Newest-4th-Generation-Robot-Lawn-Mower-With-Range-Funtion-Auto-Recharged-Remote-Controller-Waterproof-Subarea/615034_1483048974.html                                  Demo: http://youtu.be/6s9JustjchI   Newest !!! Robot lawn mower S520 is our 4th generation robot lawn mower and latest robot lawn mower came out in last month. More advance funtions like: pressure sensor, touch sensor,rain sensor, bump sensor, autorecharge, subarea setting, mowing schedule and so on.   The improvement of S520 ,which is better than other models:     1.Rear wheel Use solid core wheel for S520, heavier rear wheel than it used for S510, it can keep from slippery when running on slopes and hills.  2.4pcs of Small blades Please check the picture attached, increased the cutting width,also each blade with four sharp edges, every edge can used if one damaged by hard stone or other objects. 3.without ultrasonic sensors The bumper function is good enough. 4.Improve the front wheel. Use PPR material for the front wheel, it is softer than the original one, and against the vibration when working on the lawn.Also the front wheel with stainless steel holder, against rusting after long time using.   5.add range function: There are four options for the ranges, user can choose thedistance when the robot hit the virtual wire according the condition of different lawns.    6.Different charging connection, S520 has a better connection with the charging station, two charging heads connect the copper sheets perfectly.   7.Improve the line function:   Change the running pattern for the line mode(Line function on):before:user has to put the robot on the back of the charging station to start, the robot will follow the wire cutting first.it is not user-friendly.   Now:The robot started on the wire or inside the virtual wire, the robot will find the virtual wire and follow it to the charging station, meet it, then back from the charging station and circle to the back of the charging station, and follow the virtual wire cutting until meet the charging station again, then back to the lawn for cutting continuously.    S520 Functions: 1. Tilt sensor 2. Lift sensor 3. Bump sensor 4. Rain sensor 5. Auto recharge 6. Password 7. Electronic compass 8. Pressure sensor 9. Touch sensor 10. Waterproof 11.Language option 12.Mowing schedule 13.Subarea setting 14.Overload protect 15.Range 16.Emergencey stop switch   Technical information about S520